1 // SPDX-License-Identifier: GPL-2.0
4 #include "btree_update_interior.h"
7 #include "disk_groups.h"
12 #include "journal_io.h"
13 #include "journal_sb.h"
14 #include "journal_seq_blacklist.h"
23 #include <linux/backing-dev.h>
24 #include <linux/sort.h>
26 struct bch2_metadata_version_str {
31 static const struct bch2_metadata_version_str bch2_metadata_versions[] = {
32 #define x(n, v) { .version = v, .name = #n },
33 BCH_METADATA_VERSIONS()
37 void bch2_version_to_text(struct printbuf *out, unsigned v)
39 const char *str = "(unknown version)";
41 for (unsigned i = 0; i < ARRAY_SIZE(bch2_metadata_versions); i++)
42 if (bch2_metadata_versions[i].version == v) {
43 str = bch2_metadata_versions[i].name;
47 prt_printf(out, "%u.%u: %s", BCH_VERSION_MAJOR(v), BCH_VERSION_MINOR(v), str);
50 unsigned bch2_latest_compatible_version(unsigned v)
52 if (!BCH_VERSION_MAJOR(v))
55 for (unsigned i = 0; i < ARRAY_SIZE(bch2_metadata_versions); i++)
56 if (bch2_metadata_versions[i].version > v &&
57 BCH_VERSION_MAJOR(bch2_metadata_versions[i].version) ==
59 v = bch2_metadata_versions[i].version;
64 const char * const bch2_sb_fields[] = {
65 #define x(name, nr) #name,
71 static int bch2_sb_field_validate(struct bch_sb *, struct bch_sb_field *,
74 struct bch_sb_field *bch2_sb_field_get(struct bch_sb *sb,
75 enum bch_sb_field_type type)
77 struct bch_sb_field *f;
79 /* XXX: need locking around superblock to access optional fields */
81 vstruct_for_each(sb, f)
82 if (le32_to_cpu(f->type) == type)
87 static struct bch_sb_field *__bch2_sb_field_resize(struct bch_sb_handle *sb,
88 struct bch_sb_field *f,
91 unsigned old_u64s = f ? le32_to_cpu(f->u64s) : 0;
92 unsigned sb_u64s = le32_to_cpu(sb->sb->u64s) + u64s - old_u64s;
94 BUG_ON(__vstruct_bytes(struct bch_sb, sb_u64s) > sb->buffer_size);
99 f = vstruct_last(sb->sb);
100 memset(f, 0, sizeof(u64) * u64s);
101 f->u64s = cpu_to_le32(u64s);
106 src = vstruct_end(f);
109 f->u64s = cpu_to_le32(u64s);
110 dst = vstruct_end(f);
115 memmove(dst, src, vstruct_end(sb->sb) - src);
118 memset(src, 0, dst - src);
121 sb->sb->u64s = cpu_to_le32(sb_u64s);
123 return u64s ? f : NULL;
126 void bch2_sb_field_delete(struct bch_sb_handle *sb,
127 enum bch_sb_field_type type)
129 struct bch_sb_field *f = bch2_sb_field_get(sb->sb, type);
132 __bch2_sb_field_resize(sb, f, 0);
135 /* Superblock realloc/free: */
137 void bch2_free_super(struct bch_sb_handle *sb)
140 if (!IS_ERR_OR_NULL(sb->bdev))
141 blkdev_put(sb->bdev, sb->mode);
144 memset(sb, 0, sizeof(*sb));
147 int bch2_sb_realloc(struct bch_sb_handle *sb, unsigned u64s)
149 size_t new_bytes = __vstruct_bytes(struct bch_sb, u64s);
150 size_t new_buffer_size;
151 struct bch_sb *new_sb;
155 new_bytes = max_t(size_t, new_bytes, bdev_logical_block_size(sb->bdev));
157 new_buffer_size = roundup_pow_of_two(new_bytes);
159 if (sb->sb && sb->buffer_size >= new_buffer_size)
162 if (sb->have_layout) {
163 u64 max_bytes = 512 << sb->sb->layout.sb_max_size_bits;
165 if (new_bytes > max_bytes) {
166 pr_err("%pg: superblock too big: want %zu but have %llu",
167 sb->bdev, new_bytes, max_bytes);
168 return -BCH_ERR_ENOSPC_sb;
172 if (sb->buffer_size >= new_buffer_size && sb->sb)
175 if (dynamic_fault("bcachefs:add:super_realloc"))
176 return -BCH_ERR_ENOMEM_sb_realloc_injected;
179 unsigned nr_bvecs = DIV_ROUND_UP(new_buffer_size, PAGE_SIZE);
181 bio = bio_kmalloc(nr_bvecs, GFP_KERNEL);
183 return -BCH_ERR_ENOMEM_sb_bio_realloc;
185 bio_init(bio, NULL, bio->bi_inline_vecs, nr_bvecs, 0);
191 new_sb = krealloc(sb->sb, new_buffer_size, GFP_NOFS|__GFP_ZERO);
193 return -BCH_ERR_ENOMEM_sb_buf_realloc;
196 sb->buffer_size = new_buffer_size;
201 struct bch_sb_field *bch2_sb_field_resize(struct bch_sb_handle *sb,
202 enum bch_sb_field_type type,
205 struct bch_sb_field *f = bch2_sb_field_get(sb->sb, type);
206 ssize_t old_u64s = f ? le32_to_cpu(f->u64s) : 0;
207 ssize_t d = -old_u64s + u64s;
209 if (bch2_sb_realloc(sb, le32_to_cpu(sb->sb->u64s) + d))
213 struct bch_fs *c = container_of(sb, struct bch_fs, disk_sb);
217 lockdep_assert_held(&c->sb_lock);
219 /* XXX: we're not checking that offline device have enough space */
221 for_each_online_member(ca, c, i) {
222 struct bch_sb_handle *sb = &ca->disk_sb;
224 if (bch2_sb_realloc(sb, le32_to_cpu(sb->sb->u64s) + d)) {
225 percpu_ref_put(&ca->ref);
231 f = bch2_sb_field_get(sb->sb, type);
232 f = __bch2_sb_field_resize(sb, f, u64s);
234 f->type = cpu_to_le32(type);
238 /* Superblock validate: */
240 static inline void __bch2_sb_layout_size_assert(void)
242 BUILD_BUG_ON(sizeof(struct bch_sb_layout) != 512);
245 static int validate_sb_layout(struct bch_sb_layout *layout, struct printbuf *out)
247 u64 offset, prev_offset, max_sectors;
250 if (!uuid_equal(&layout->magic, &BCACHE_MAGIC) &&
251 !uuid_equal(&layout->magic, &BCHFS_MAGIC)) {
252 prt_printf(out, "Not a bcachefs superblock layout");
253 return -BCH_ERR_invalid_sb_layout;
256 if (layout->layout_type != 0) {
257 prt_printf(out, "Invalid superblock layout type %u",
258 layout->layout_type);
259 return -BCH_ERR_invalid_sb_layout_type;
262 if (!layout->nr_superblocks) {
263 prt_printf(out, "Invalid superblock layout: no superblocks");
264 return -BCH_ERR_invalid_sb_layout_nr_superblocks;
267 if (layout->nr_superblocks > ARRAY_SIZE(layout->sb_offset)) {
268 prt_printf(out, "Invalid superblock layout: too many superblocks");
269 return -BCH_ERR_invalid_sb_layout_nr_superblocks;
272 max_sectors = 1 << layout->sb_max_size_bits;
274 prev_offset = le64_to_cpu(layout->sb_offset[0]);
276 for (i = 1; i < layout->nr_superblocks; i++) {
277 offset = le64_to_cpu(layout->sb_offset[i]);
279 if (offset < prev_offset + max_sectors) {
280 prt_printf(out, "Invalid superblock layout: superblocks overlap\n"
281 " (sb %u ends at %llu next starts at %llu",
282 i - 1, prev_offset + max_sectors, offset);
283 return -BCH_ERR_invalid_sb_layout_superblocks_overlap;
285 prev_offset = offset;
291 static int bch2_sb_compatible(struct bch_sb *sb, struct printbuf *out)
293 u16 version = le16_to_cpu(sb->version);
294 u16 version_min = le16_to_cpu(sb->version_min);
296 if (!bch2_version_compatible(version)) {
297 prt_str(out, "Unsupported superblock version ");
298 bch2_version_to_text(out, version);
299 prt_str(out, " (min ");
300 bch2_version_to_text(out, bcachefs_metadata_version_min);
301 prt_str(out, ", max ");
302 bch2_version_to_text(out, bcachefs_metadata_version_current);
304 return -BCH_ERR_invalid_sb_version;
307 if (!bch2_version_compatible(version_min)) {
308 prt_str(out, "Unsupported superblock version_min ");
309 bch2_version_to_text(out, version_min);
310 prt_str(out, " (min ");
311 bch2_version_to_text(out, bcachefs_metadata_version_min);
312 prt_str(out, ", max ");
313 bch2_version_to_text(out, bcachefs_metadata_version_current);
315 return -BCH_ERR_invalid_sb_version;
318 if (version_min > version) {
319 prt_str(out, "Bad minimum version ");
320 bch2_version_to_text(out, version_min);
321 prt_str(out, ", greater than version field ");
322 bch2_version_to_text(out, version);
323 return -BCH_ERR_invalid_sb_version;
329 static int bch2_sb_validate(struct bch_sb_handle *disk_sb, struct printbuf *out,
332 struct bch_sb *sb = disk_sb->sb;
333 struct bch_sb_field *f;
334 struct bch_sb_field_members *mi;
335 enum bch_opt_id opt_id;
339 ret = bch2_sb_compatible(sb, out);
343 if (sb->features[1] ||
344 (le64_to_cpu(sb->features[0]) & (~0ULL << BCH_FEATURE_NR))) {
345 prt_printf(out, "Filesystem has incompatible features");
346 return -BCH_ERR_invalid_sb_features;
349 block_size = le16_to_cpu(sb->block_size);
351 if (block_size > PAGE_SECTORS) {
352 prt_printf(out, "Block size too big (got %u, max %u)",
353 block_size, PAGE_SECTORS);
354 return -BCH_ERR_invalid_sb_block_size;
357 if (bch2_is_zero(sb->user_uuid.b, sizeof(sb->user_uuid))) {
358 prt_printf(out, "Bad user UUID (got zeroes)");
359 return -BCH_ERR_invalid_sb_uuid;
362 if (bch2_is_zero(sb->uuid.b, sizeof(sb->uuid))) {
363 prt_printf(out, "Bad intenal UUID (got zeroes)");
364 return -BCH_ERR_invalid_sb_uuid;
367 if (!sb->nr_devices ||
368 sb->nr_devices > BCH_SB_MEMBERS_MAX) {
369 prt_printf(out, "Bad number of member devices %u (max %u)",
370 sb->nr_devices, BCH_SB_MEMBERS_MAX);
371 return -BCH_ERR_invalid_sb_too_many_members;
374 if (sb->dev_idx >= sb->nr_devices) {
375 prt_printf(out, "Bad dev_idx (got %u, nr_devices %u)",
376 sb->dev_idx, sb->nr_devices);
377 return -BCH_ERR_invalid_sb_dev_idx;
380 if (!sb->time_precision ||
381 le32_to_cpu(sb->time_precision) > NSEC_PER_SEC) {
382 prt_printf(out, "Invalid time precision: %u (min 1, max %lu)",
383 le32_to_cpu(sb->time_precision), NSEC_PER_SEC);
384 return -BCH_ERR_invalid_sb_time_precision;
389 * Been seeing a bug where these are getting inexplicably
390 * zeroed, so we're now validating them, but we have to be
391 * careful not to preven people's filesystems from mounting:
393 if (!BCH_SB_JOURNAL_FLUSH_DELAY(sb))
394 SET_BCH_SB_JOURNAL_FLUSH_DELAY(sb, 1000);
395 if (!BCH_SB_JOURNAL_RECLAIM_DELAY(sb))
396 SET_BCH_SB_JOURNAL_RECLAIM_DELAY(sb, 1000);
399 for (opt_id = 0; opt_id < bch2_opts_nr; opt_id++) {
400 const struct bch_option *opt = bch2_opt_table + opt_id;
402 if (opt->get_sb != BCH2_NO_SB_OPT) {
403 u64 v = bch2_opt_from_sb(sb, opt_id);
405 prt_printf(out, "Invalid option ");
406 ret = bch2_opt_validate(opt, v, out);
414 /* validate layout */
415 ret = validate_sb_layout(&sb->layout, out);
419 vstruct_for_each(sb, f) {
421 prt_printf(out, "Invalid superblock: optional field with size 0 (type %u)",
422 le32_to_cpu(f->type));
423 return -BCH_ERR_invalid_sb_field_size;
426 if (vstruct_next(f) > vstruct_last(sb)) {
427 prt_printf(out, "Invalid superblock: optional field extends past end of superblock (type %u)",
428 le32_to_cpu(f->type));
429 return -BCH_ERR_invalid_sb_field_size;
433 /* members must be validated first: */
434 mi = bch2_sb_get_members(sb);
436 prt_printf(out, "Invalid superblock: member info area missing");
437 return -BCH_ERR_invalid_sb_members_missing;
440 ret = bch2_sb_field_validate(sb, &mi->field, out);
444 vstruct_for_each(sb, f) {
445 if (le32_to_cpu(f->type) == BCH_SB_FIELD_members)
448 ret = bch2_sb_field_validate(sb, f, out);
458 static void bch2_sb_update(struct bch_fs *c)
460 struct bch_sb *src = c->disk_sb.sb;
461 struct bch_sb_field_members *mi = bch2_sb_get_members(src);
465 lockdep_assert_held(&c->sb_lock);
467 c->sb.uuid = src->uuid;
468 c->sb.user_uuid = src->user_uuid;
469 c->sb.version = le16_to_cpu(src->version);
470 c->sb.version_min = le16_to_cpu(src->version_min);
471 c->sb.version_upgrade_complete = BCH_SB_VERSION_UPGRADE_COMPLETE(src) ?: c->sb.version;
472 c->sb.nr_devices = src->nr_devices;
473 c->sb.clean = BCH_SB_CLEAN(src);
474 c->sb.encryption_type = BCH_SB_ENCRYPTION_TYPE(src);
476 c->sb.nsec_per_time_unit = le32_to_cpu(src->time_precision);
477 c->sb.time_units_per_sec = NSEC_PER_SEC / c->sb.nsec_per_time_unit;
479 /* XXX this is wrong, we need a 96 or 128 bit integer type */
480 c->sb.time_base_lo = div_u64(le64_to_cpu(src->time_base_lo),
481 c->sb.nsec_per_time_unit);
482 c->sb.time_base_hi = le32_to_cpu(src->time_base_hi);
484 c->sb.features = le64_to_cpu(src->features[0]);
485 c->sb.compat = le64_to_cpu(src->compat[0]);
487 for_each_member_device(ca, c, i)
488 ca->mi = bch2_mi_to_cpu(mi->members + i);
491 static int __copy_super(struct bch_sb_handle *dst_handle, struct bch_sb *src)
493 struct bch_sb_field *src_f, *dst_f;
494 struct bch_sb *dst = dst_handle->sb;
497 dst->version = src->version;
498 dst->version_min = src->version_min;
500 dst->uuid = src->uuid;
501 dst->user_uuid = src->user_uuid;
502 memcpy(dst->label, src->label, sizeof(dst->label));
504 dst->block_size = src->block_size;
505 dst->nr_devices = src->nr_devices;
507 dst->time_base_lo = src->time_base_lo;
508 dst->time_base_hi = src->time_base_hi;
509 dst->time_precision = src->time_precision;
511 memcpy(dst->flags, src->flags, sizeof(dst->flags));
512 memcpy(dst->features, src->features, sizeof(dst->features));
513 memcpy(dst->compat, src->compat, sizeof(dst->compat));
515 for (i = 0; i < BCH_SB_FIELD_NR; i++) {
518 if ((1U << i) & BCH_SINGLE_DEVICE_SB_FIELDS)
521 src_f = bch2_sb_field_get(src, i);
522 dst_f = bch2_sb_field_get(dst, i);
524 d = (src_f ? le32_to_cpu(src_f->u64s) : 0) -
525 (dst_f ? le32_to_cpu(dst_f->u64s) : 0);
527 int ret = bch2_sb_realloc(dst_handle, le32_to_cpu(dst_handle->sb->u64s) + d);
531 dst = dst_handle->sb;
532 dst_f = bch2_sb_field_get(dst, i);
535 dst_f = __bch2_sb_field_resize(dst_handle, dst_f,
536 src_f ? le32_to_cpu(src_f->u64s) : 0);
539 memcpy(dst_f, src_f, vstruct_bytes(src_f));
545 int bch2_sb_to_fs(struct bch_fs *c, struct bch_sb *src)
549 lockdep_assert_held(&c->sb_lock);
551 ret = bch2_sb_realloc(&c->disk_sb, 0) ?:
552 __copy_super(&c->disk_sb, src) ?:
553 bch2_sb_replicas_to_cpu_replicas(c) ?:
554 bch2_sb_disk_groups_to_cpu(c);
562 int bch2_sb_from_fs(struct bch_fs *c, struct bch_dev *ca)
564 return __copy_super(&ca->disk_sb, c->disk_sb.sb);
567 /* read superblock: */
569 static int read_one_super(struct bch_sb_handle *sb, u64 offset, struct printbuf *err)
571 struct bch_csum csum;
575 bio_reset(sb->bio, sb->bdev, REQ_OP_READ|REQ_SYNC|REQ_META);
576 sb->bio->bi_iter.bi_sector = offset;
577 bch2_bio_map(sb->bio, sb->sb, sb->buffer_size);
579 ret = submit_bio_wait(sb->bio);
581 prt_printf(err, "IO error: %i", ret);
585 if (!uuid_equal(&sb->sb->magic, &BCACHE_MAGIC) &&
586 !uuid_equal(&sb->sb->magic, &BCHFS_MAGIC)) {
587 prt_printf(err, "Not a bcachefs superblock");
588 return -BCH_ERR_invalid_sb_magic;
591 ret = bch2_sb_compatible(sb->sb, err);
595 bytes = vstruct_bytes(sb->sb);
597 if (bytes > 512 << sb->sb->layout.sb_max_size_bits) {
598 prt_printf(err, "Invalid superblock: too big (got %zu bytes, layout max %lu)",
599 bytes, 512UL << sb->sb->layout.sb_max_size_bits);
600 return -BCH_ERR_invalid_sb_too_big;
603 if (bytes > sb->buffer_size) {
604 ret = bch2_sb_realloc(sb, le32_to_cpu(sb->sb->u64s));
610 if (BCH_SB_CSUM_TYPE(sb->sb) >= BCH_CSUM_NR) {
611 prt_printf(err, "unknown checksum type %llu", BCH_SB_CSUM_TYPE(sb->sb));
612 return -BCH_ERR_invalid_sb_csum_type;
615 /* XXX: verify MACs */
616 csum = csum_vstruct(NULL, BCH_SB_CSUM_TYPE(sb->sb),
617 null_nonce(), sb->sb);
619 if (bch2_crc_cmp(csum, sb->sb->csum)) {
620 prt_printf(err, "bad checksum");
621 return -BCH_ERR_invalid_sb_csum;
624 sb->seq = le64_to_cpu(sb->sb->seq);
629 int bch2_read_super(const char *path, struct bch_opts *opts,
630 struct bch_sb_handle *sb)
632 u64 offset = opt_get(*opts, sb);
633 struct bch_sb_layout layout;
634 struct printbuf err = PRINTBUF;
638 memset(sb, 0, sizeof(*sb));
639 sb->mode = FMODE_READ;
642 if (!opt_get(*opts, noexcl))
643 sb->mode |= FMODE_EXCL;
645 if (!opt_get(*opts, nochanges))
646 sb->mode |= FMODE_WRITE;
648 sb->bdev = blkdev_get_by_path(path, sb->mode, sb);
649 if (IS_ERR(sb->bdev) &&
650 PTR_ERR(sb->bdev) == -EACCES &&
651 opt_get(*opts, read_only)) {
652 sb->mode &= ~FMODE_WRITE;
654 sb->bdev = blkdev_get_by_path(path, sb->mode, sb);
655 if (!IS_ERR(sb->bdev))
656 opt_set(*opts, nochanges, true);
659 if (IS_ERR(sb->bdev)) {
660 ret = PTR_ERR(sb->bdev);
664 ret = bch2_sb_realloc(sb, 0);
666 prt_printf(&err, "error allocating memory for superblock");
670 if (bch2_fs_init_fault("read_super")) {
671 prt_printf(&err, "dynamic fault");
676 ret = read_one_super(sb, offset, &err);
680 if (opt_defined(*opts, sb))
683 printk(KERN_ERR "bcachefs (%s): error reading default superblock: %s",
685 printbuf_reset(&err);
688 * Error reading primary superblock - read location of backup
691 bio_reset(sb->bio, sb->bdev, REQ_OP_READ|REQ_SYNC|REQ_META);
692 sb->bio->bi_iter.bi_sector = BCH_SB_LAYOUT_SECTOR;
694 * use sb buffer to read layout, since sb buffer is page aligned but
697 bch2_bio_map(sb->bio, sb->sb, sizeof(struct bch_sb_layout));
699 ret = submit_bio_wait(sb->bio);
701 prt_printf(&err, "IO error: %i", ret);
705 memcpy(&layout, sb->sb, sizeof(layout));
706 ret = validate_sb_layout(&layout, &err);
710 for (i = layout.sb_offset;
711 i < layout.sb_offset + layout.nr_superblocks; i++) {
712 offset = le64_to_cpu(*i);
714 if (offset == opt_get(*opts, sb))
717 ret = read_one_super(sb, offset, &err);
725 if (le16_to_cpu(sb->sb->block_size) << 9 <
726 bdev_logical_block_size(sb->bdev)) {
727 prt_printf(&err, "block size (%u) smaller than device block size (%u)",
728 le16_to_cpu(sb->sb->block_size) << 9,
729 bdev_logical_block_size(sb->bdev));
730 ret = -BCH_ERR_block_size_too_small;
735 sb->have_layout = true;
737 ret = bch2_sb_validate(sb, &err, READ);
739 printk(KERN_ERR "bcachefs (%s): error validating superblock: %s",
747 printk(KERN_ERR "bcachefs (%s): error reading superblock: %s",
754 /* write superblock: */
756 static void write_super_endio(struct bio *bio)
758 struct bch_dev *ca = bio->bi_private;
760 /* XXX: return errors directly */
762 if (bch2_dev_io_err_on(bio->bi_status, ca, "superblock write error: %s",
763 bch2_blk_status_to_str(bio->bi_status)))
764 ca->sb_write_error = 1;
766 closure_put(&ca->fs->sb_write);
767 percpu_ref_put(&ca->io_ref);
770 static void read_back_super(struct bch_fs *c, struct bch_dev *ca)
772 struct bch_sb *sb = ca->disk_sb.sb;
773 struct bio *bio = ca->disk_sb.bio;
775 bio_reset(bio, ca->disk_sb.bdev, REQ_OP_READ|REQ_SYNC|REQ_META);
776 bio->bi_iter.bi_sector = le64_to_cpu(sb->layout.sb_offset[0]);
777 bio->bi_end_io = write_super_endio;
778 bio->bi_private = ca;
779 bch2_bio_map(bio, ca->sb_read_scratch, PAGE_SIZE);
781 this_cpu_add(ca->io_done->sectors[READ][BCH_DATA_sb],
784 percpu_ref_get(&ca->io_ref);
785 closure_bio_submit(bio, &c->sb_write);
788 static void write_one_super(struct bch_fs *c, struct bch_dev *ca, unsigned idx)
790 struct bch_sb *sb = ca->disk_sb.sb;
791 struct bio *bio = ca->disk_sb.bio;
793 sb->offset = sb->layout.sb_offset[idx];
795 SET_BCH_SB_CSUM_TYPE(sb, bch2_csum_opt_to_type(c->opts.metadata_checksum, false));
796 sb->csum = csum_vstruct(c, BCH_SB_CSUM_TYPE(sb),
799 bio_reset(bio, ca->disk_sb.bdev, REQ_OP_WRITE|REQ_SYNC|REQ_META);
800 bio->bi_iter.bi_sector = le64_to_cpu(sb->offset);
801 bio->bi_end_io = write_super_endio;
802 bio->bi_private = ca;
803 bch2_bio_map(bio, sb,
804 roundup((size_t) vstruct_bytes(sb),
805 bdev_logical_block_size(ca->disk_sb.bdev)));
807 this_cpu_add(ca->io_done->sectors[WRITE][BCH_DATA_sb],
810 percpu_ref_get(&ca->io_ref);
811 closure_bio_submit(bio, &c->sb_write);
814 int bch2_write_super(struct bch_fs *c)
816 struct closure *cl = &c->sb_write;
818 struct printbuf err = PRINTBUF;
819 unsigned i, sb = 0, nr_wrote;
820 struct bch_devs_mask sb_written;
821 bool wrote, can_mount_without_written, can_mount_with_written;
822 unsigned degraded_flags = BCH_FORCE_IF_DEGRADED;
825 trace_and_count(c, write_super, c, _RET_IP_);
827 if (c->opts.very_degraded)
828 degraded_flags |= BCH_FORCE_IF_LOST;
830 lockdep_assert_held(&c->sb_lock);
832 closure_init_stack(cl);
833 memset(&sb_written, 0, sizeof(sb_written));
835 /* Make sure we're using the new magic numbers: */
836 c->disk_sb.sb->magic = BCHFS_MAGIC;
837 c->disk_sb.sb->layout.magic = BCHFS_MAGIC;
839 le64_add_cpu(&c->disk_sb.sb->seq, 1);
841 if (test_bit(BCH_FS_ERROR, &c->flags))
842 SET_BCH_SB_HAS_ERRORS(c->disk_sb.sb, 1);
843 if (test_bit(BCH_FS_TOPOLOGY_ERROR, &c->flags))
844 SET_BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb, 1);
846 SET_BCH_SB_BIG_ENDIAN(c->disk_sb.sb, CPU_BIG_ENDIAN);
848 bch2_sb_counters_from_cpu(c);
850 for_each_online_member(ca, c, i)
851 bch2_sb_from_fs(c, ca);
853 for_each_online_member(ca, c, i) {
854 printbuf_reset(&err);
856 ret = bch2_sb_validate(&ca->disk_sb, &err, WRITE);
858 bch2_fs_inconsistent(c, "sb invalid before write: %s", err.buf);
859 percpu_ref_put(&ca->io_ref);
864 if (c->opts.nochanges)
868 * Defer writing the superblock until filesystem initialization is
869 * complete - don't write out a partly initialized superblock:
871 if (!BCH_SB_INITIALIZED(c->disk_sb.sb))
874 for_each_online_member(ca, c, i) {
875 __set_bit(ca->dev_idx, sb_written.d);
876 ca->sb_write_error = 0;
879 for_each_online_member(ca, c, i)
880 read_back_super(c, ca);
883 for_each_online_member(ca, c, i) {
884 if (ca->sb_write_error)
887 if (le64_to_cpu(ca->sb_read_scratch->seq) < ca->disk_sb.seq) {
888 bch2_fs_fatal_error(c,
889 "Superblock write was silently dropped! (seq %llu expected %llu)",
890 le64_to_cpu(ca->sb_read_scratch->seq),
892 percpu_ref_put(&ca->io_ref);
893 ret = -BCH_ERR_erofs_sb_err;
897 if (le64_to_cpu(ca->sb_read_scratch->seq) > ca->disk_sb.seq) {
898 bch2_fs_fatal_error(c,
899 "Superblock modified by another process (seq %llu expected %llu)",
900 le64_to_cpu(ca->sb_read_scratch->seq),
902 percpu_ref_put(&ca->io_ref);
903 ret = -BCH_ERR_erofs_sb_err;
910 for_each_online_member(ca, c, i)
911 if (!ca->sb_write_error &&
912 sb < ca->disk_sb.sb->layout.nr_superblocks) {
913 write_one_super(c, ca, sb);
920 for_each_online_member(ca, c, i) {
921 if (ca->sb_write_error)
922 __clear_bit(ca->dev_idx, sb_written.d);
924 ca->disk_sb.seq = le64_to_cpu(ca->disk_sb.sb->seq);
927 nr_wrote = dev_mask_nr(&sb_written);
929 can_mount_with_written =
930 bch2_have_enough_devs(c, sb_written, degraded_flags, false);
932 for (i = 0; i < ARRAY_SIZE(sb_written.d); i++)
933 sb_written.d[i] = ~sb_written.d[i];
935 can_mount_without_written =
936 bch2_have_enough_devs(c, sb_written, degraded_flags, false);
939 * If we would be able to mount _without_ the devices we successfully
940 * wrote superblocks to, we weren't able to write to enough devices:
942 * Exception: if we can mount without the successes because we haven't
943 * written anything (new filesystem), we continue if we'd be able to
944 * mount with the devices we did successfully write to:
946 if (bch2_fs_fatal_err_on(!nr_wrote ||
947 !can_mount_with_written ||
948 (can_mount_without_written &&
949 !can_mount_with_written), c,
950 "Unable to write superblock to sufficient devices (from %ps)",
954 /* Make new options visible after they're persistent: */
960 void __bch2_check_set_feature(struct bch_fs *c, unsigned feat)
962 mutex_lock(&c->sb_lock);
963 if (!(c->sb.features & (1ULL << feat))) {
964 c->disk_sb.sb->features[0] |= cpu_to_le64(1ULL << feat);
968 mutex_unlock(&c->sb_lock);
971 /* BCH_SB_FIELD_members: */
973 static int bch2_sb_members_validate(struct bch_sb *sb,
974 struct bch_sb_field *f,
975 struct printbuf *err)
977 struct bch_sb_field_members *mi = field_to_type(f, members);
980 if ((void *) (mi->members + sb->nr_devices) >
981 vstruct_end(&mi->field)) {
982 prt_printf(err, "too many devices for section size");
983 return -BCH_ERR_invalid_sb_members;
986 for (i = 0; i < sb->nr_devices; i++) {
987 struct bch_member *m = mi->members + i;
989 if (!bch2_member_exists(m))
992 if (le64_to_cpu(m->nbuckets) > LONG_MAX) {
993 prt_printf(err, "device %u: too many buckets (got %llu, max %lu)",
994 i, le64_to_cpu(m->nbuckets), LONG_MAX);
995 return -BCH_ERR_invalid_sb_members;
998 if (le64_to_cpu(m->nbuckets) -
999 le16_to_cpu(m->first_bucket) < BCH_MIN_NR_NBUCKETS) {
1000 prt_printf(err, "device %u: not enough buckets (got %llu, max %u)",
1001 i, le64_to_cpu(m->nbuckets), BCH_MIN_NR_NBUCKETS);
1002 return -BCH_ERR_invalid_sb_members;
1005 if (le16_to_cpu(m->bucket_size) <
1006 le16_to_cpu(sb->block_size)) {
1007 prt_printf(err, "device %u: bucket size %u smaller than block size %u",
1008 i, le16_to_cpu(m->bucket_size), le16_to_cpu(sb->block_size));
1009 return -BCH_ERR_invalid_sb_members;
1012 if (le16_to_cpu(m->bucket_size) <
1013 BCH_SB_BTREE_NODE_SIZE(sb)) {
1014 prt_printf(err, "device %u: bucket size %u smaller than btree node size %llu",
1015 i, le16_to_cpu(m->bucket_size), BCH_SB_BTREE_NODE_SIZE(sb));
1016 return -BCH_ERR_invalid_sb_members;
1023 static void bch2_sb_members_to_text(struct printbuf *out, struct bch_sb *sb,
1024 struct bch_sb_field *f)
1026 struct bch_sb_field_members *mi = field_to_type(f, members);
1027 struct bch_sb_field_disk_groups *gi = bch2_sb_get_disk_groups(sb);
1030 for (i = 0; i < sb->nr_devices; i++) {
1031 struct bch_member *m = mi->members + i;
1032 unsigned data_have = bch2_sb_dev_has_data(sb, i);
1033 u64 bucket_size = le16_to_cpu(m->bucket_size);
1034 u64 device_size = le64_to_cpu(m->nbuckets) * bucket_size;
1036 if (!bch2_member_exists(m))
1039 prt_printf(out, "Device:");
1041 prt_printf(out, "%u", i);
1044 printbuf_indent_add(out, 2);
1046 prt_printf(out, "UUID:");
1048 pr_uuid(out, m->uuid.b);
1051 prt_printf(out, "Size:");
1053 prt_units_u64(out, device_size << 9);
1056 prt_printf(out, "Bucket size:");
1058 prt_units_u64(out, bucket_size << 9);
1061 prt_printf(out, "First bucket:");
1063 prt_printf(out, "%u", le16_to_cpu(m->first_bucket));
1066 prt_printf(out, "Buckets:");
1068 prt_printf(out, "%llu", le64_to_cpu(m->nbuckets));
1071 prt_printf(out, "Last mount:");
1074 pr_time(out, le64_to_cpu(m->last_mount));
1076 prt_printf(out, "(never)");
1079 prt_printf(out, "State:");
1081 prt_printf(out, "%s",
1082 BCH_MEMBER_STATE(m) < BCH_MEMBER_STATE_NR
1083 ? bch2_member_states[BCH_MEMBER_STATE(m)]
1087 prt_printf(out, "Label:");
1089 if (BCH_MEMBER_GROUP(m)) {
1090 unsigned idx = BCH_MEMBER_GROUP(m) - 1;
1092 if (idx < disk_groups_nr(gi))
1093 prt_printf(out, "%s (%u)",
1094 gi->entries[idx].label, idx);
1096 prt_printf(out, "(bad disk labels section)");
1098 prt_printf(out, "(none)");
1102 prt_printf(out, "Data allowed:");
1104 if (BCH_MEMBER_DATA_ALLOWED(m))
1105 prt_bitflags(out, bch2_data_types, BCH_MEMBER_DATA_ALLOWED(m));
1107 prt_printf(out, "(none)");
1110 prt_printf(out, "Has data:");
1113 prt_bitflags(out, bch2_data_types, data_have);
1115 prt_printf(out, "(none)");
1118 prt_printf(out, "Discard:");
1120 prt_printf(out, "%llu", BCH_MEMBER_DISCARD(m));
1123 prt_printf(out, "Freespace initialized:");
1125 prt_printf(out, "%llu", BCH_MEMBER_FREESPACE_INITIALIZED(m));
1128 printbuf_indent_sub(out, 2);
1132 static const struct bch_sb_field_ops bch_sb_field_ops_members = {
1133 .validate = bch2_sb_members_validate,
1134 .to_text = bch2_sb_members_to_text,
1137 /* BCH_SB_FIELD_crypt: */
1139 static int bch2_sb_crypt_validate(struct bch_sb *sb,
1140 struct bch_sb_field *f,
1141 struct printbuf *err)
1143 struct bch_sb_field_crypt *crypt = field_to_type(f, crypt);
1145 if (vstruct_bytes(&crypt->field) < sizeof(*crypt)) {
1146 prt_printf(err, "wrong size (got %zu should be %zu)",
1147 vstruct_bytes(&crypt->field), sizeof(*crypt));
1148 return -BCH_ERR_invalid_sb_crypt;
1151 if (BCH_CRYPT_KDF_TYPE(crypt)) {
1152 prt_printf(err, "bad kdf type %llu", BCH_CRYPT_KDF_TYPE(crypt));
1153 return -BCH_ERR_invalid_sb_crypt;
1159 static void bch2_sb_crypt_to_text(struct printbuf *out, struct bch_sb *sb,
1160 struct bch_sb_field *f)
1162 struct bch_sb_field_crypt *crypt = field_to_type(f, crypt);
1164 prt_printf(out, "KFD: %llu", BCH_CRYPT_KDF_TYPE(crypt));
1166 prt_printf(out, "scrypt n: %llu", BCH_KDF_SCRYPT_N(crypt));
1168 prt_printf(out, "scrypt r: %llu", BCH_KDF_SCRYPT_R(crypt));
1170 prt_printf(out, "scrypt p: %llu", BCH_KDF_SCRYPT_P(crypt));
1174 static const struct bch_sb_field_ops bch_sb_field_ops_crypt = {
1175 .validate = bch2_sb_crypt_validate,
1176 .to_text = bch2_sb_crypt_to_text,
1179 /* BCH_SB_FIELD_clean: */
1181 int bch2_sb_clean_validate_late(struct bch_fs *c, struct bch_sb_field_clean *clean, int write)
1183 struct jset_entry *entry;
1186 for (entry = clean->start;
1187 entry < (struct jset_entry *) vstruct_end(&clean->field);
1188 entry = vstruct_next(entry)) {
1189 ret = bch2_journal_entry_validate(c, NULL, entry,
1190 le16_to_cpu(c->disk_sb.sb->version),
1191 BCH_SB_BIG_ENDIAN(c->disk_sb.sb),
1200 /* Downgrade if superblock is at a higher version than currently supported: */
1201 void bch2_sb_maybe_downgrade(struct bch_fs *c)
1203 lockdep_assert_held(&c->sb_lock);
1206 * Downgrade, if superblock is at a higher version than currently
1209 if (BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb) > bcachefs_metadata_version_current)
1210 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb, bcachefs_metadata_version_current);
1211 if (c->sb.version > bcachefs_metadata_version_current)
1212 c->disk_sb.sb->version = cpu_to_le16(bcachefs_metadata_version_current);
1213 if (c->sb.version_min > bcachefs_metadata_version_current)
1214 c->disk_sb.sb->version_min = cpu_to_le16(bcachefs_metadata_version_current);
1215 c->disk_sb.sb->compat[0] &= cpu_to_le64((1ULL << BCH_COMPAT_NR) - 1);
1218 void bch2_sb_upgrade(struct bch_fs *c, unsigned new_version)
1220 lockdep_assert_held(&c->sb_lock);
1222 c->disk_sb.sb->version = cpu_to_le16(new_version);
1223 c->disk_sb.sb->features[0] |= cpu_to_le64(BCH_SB_FEATURES_ALL);
1226 int bch2_fs_mark_dirty(struct bch_fs *c)
1231 * Unconditionally write superblock, to verify it hasn't changed before
1235 mutex_lock(&c->sb_lock);
1236 SET_BCH_SB_CLEAN(c->disk_sb.sb, false);
1238 bch2_sb_maybe_downgrade(c);
1239 c->disk_sb.sb->features[0] |= cpu_to_le64(BCH_SB_FEATURES_ALWAYS);
1241 ret = bch2_write_super(c);
1242 mutex_unlock(&c->sb_lock);
1247 static struct jset_entry *jset_entry_init(struct jset_entry **end, size_t size)
1249 struct jset_entry *entry = *end;
1250 unsigned u64s = DIV_ROUND_UP(size, sizeof(u64));
1252 memset(entry, 0, u64s * sizeof(u64));
1254 * The u64s field counts from the start of data, ignoring the shared
1257 entry->u64s = cpu_to_le16(u64s - 1);
1259 *end = vstruct_next(*end);
1263 void bch2_journal_super_entries_add_common(struct bch_fs *c,
1264 struct jset_entry **end,
1270 percpu_down_read(&c->mark_lock);
1273 for (i = 0; i < ARRAY_SIZE(c->usage); i++)
1274 bch2_fs_usage_acc_to_base(c, i);
1276 bch2_fs_usage_acc_to_base(c, journal_seq & JOURNAL_BUF_MASK);
1280 struct jset_entry_usage *u =
1281 container_of(jset_entry_init(end, sizeof(*u)),
1282 struct jset_entry_usage, entry);
1284 u->entry.type = BCH_JSET_ENTRY_usage;
1285 u->entry.btree_id = BCH_FS_USAGE_inodes;
1286 u->v = cpu_to_le64(c->usage_base->nr_inodes);
1290 struct jset_entry_usage *u =
1291 container_of(jset_entry_init(end, sizeof(*u)),
1292 struct jset_entry_usage, entry);
1294 u->entry.type = BCH_JSET_ENTRY_usage;
1295 u->entry.btree_id = BCH_FS_USAGE_key_version;
1296 u->v = cpu_to_le64(atomic64_read(&c->key_version));
1299 for (i = 0; i < BCH_REPLICAS_MAX; i++) {
1300 struct jset_entry_usage *u =
1301 container_of(jset_entry_init(end, sizeof(*u)),
1302 struct jset_entry_usage, entry);
1304 u->entry.type = BCH_JSET_ENTRY_usage;
1305 u->entry.btree_id = BCH_FS_USAGE_reserved;
1307 u->v = cpu_to_le64(c->usage_base->persistent_reserved[i]);
1310 for (i = 0; i < c->replicas.nr; i++) {
1311 struct bch_replicas_entry *e =
1312 cpu_replicas_entry(&c->replicas, i);
1313 struct jset_entry_data_usage *u =
1314 container_of(jset_entry_init(end, sizeof(*u) + e->nr_devs),
1315 struct jset_entry_data_usage, entry);
1317 u->entry.type = BCH_JSET_ENTRY_data_usage;
1318 u->v = cpu_to_le64(c->usage_base->replicas[i]);
1319 unsafe_memcpy(&u->r, e, replicas_entry_bytes(e),
1320 "embedded variable length struct");
1323 for_each_member_device(ca, c, dev) {
1324 unsigned b = sizeof(struct jset_entry_dev_usage) +
1325 sizeof(struct jset_entry_dev_usage_type) * BCH_DATA_NR;
1326 struct jset_entry_dev_usage *u =
1327 container_of(jset_entry_init(end, b),
1328 struct jset_entry_dev_usage, entry);
1330 u->entry.type = BCH_JSET_ENTRY_dev_usage;
1331 u->dev = cpu_to_le32(dev);
1332 u->buckets_ec = cpu_to_le64(ca->usage_base->buckets_ec);
1334 for (i = 0; i < BCH_DATA_NR; i++) {
1335 u->d[i].buckets = cpu_to_le64(ca->usage_base->d[i].buckets);
1336 u->d[i].sectors = cpu_to_le64(ca->usage_base->d[i].sectors);
1337 u->d[i].fragmented = cpu_to_le64(ca->usage_base->d[i].fragmented);
1341 percpu_up_read(&c->mark_lock);
1343 for (i = 0; i < 2; i++) {
1344 struct jset_entry_clock *clock =
1345 container_of(jset_entry_init(end, sizeof(*clock)),
1346 struct jset_entry_clock, entry);
1348 clock->entry.type = BCH_JSET_ENTRY_clock;
1350 clock->time = cpu_to_le64(atomic64_read(&c->io_clock[i].now));
1354 void bch2_fs_mark_clean(struct bch_fs *c)
1356 struct bch_sb_field_clean *sb_clean;
1357 struct jset_entry *entry;
1361 mutex_lock(&c->sb_lock);
1362 if (BCH_SB_CLEAN(c->disk_sb.sb))
1365 SET_BCH_SB_CLEAN(c->disk_sb.sb, true);
1367 c->disk_sb.sb->compat[0] |= cpu_to_le64(1ULL << BCH_COMPAT_alloc_info);
1368 c->disk_sb.sb->compat[0] |= cpu_to_le64(1ULL << BCH_COMPAT_alloc_metadata);
1369 c->disk_sb.sb->features[0] &= cpu_to_le64(~(1ULL << BCH_FEATURE_extents_above_btree_updates));
1370 c->disk_sb.sb->features[0] &= cpu_to_le64(~(1ULL << BCH_FEATURE_btree_updates_journalled));
1372 u64s = sizeof(*sb_clean) / sizeof(u64) + c->journal.entry_u64s_reserved;
1374 sb_clean = bch2_sb_resize_clean(&c->disk_sb, u64s);
1376 bch_err(c, "error resizing superblock while setting filesystem clean");
1380 sb_clean->flags = 0;
1381 sb_clean->journal_seq = cpu_to_le64(atomic64_read(&c->journal.seq));
1383 /* Trying to catch outstanding bug: */
1384 BUG_ON(le64_to_cpu(sb_clean->journal_seq) > S64_MAX);
1386 entry = sb_clean->start;
1387 bch2_journal_super_entries_add_common(c, &entry, 0);
1388 entry = bch2_btree_roots_to_journal_entries(c, entry, entry);
1389 BUG_ON((void *) entry > vstruct_end(&sb_clean->field));
1392 vstruct_end(&sb_clean->field) - (void *) entry);
1395 * this should be in the write path, and we should be validating every
1396 * superblock section:
1398 ret = bch2_sb_clean_validate_late(c, sb_clean, WRITE);
1400 bch_err(c, "error writing marking filesystem clean: validate error");
1404 bch2_write_super(c);
1406 mutex_unlock(&c->sb_lock);
1409 static int bch2_sb_clean_validate(struct bch_sb *sb,
1410 struct bch_sb_field *f,
1411 struct printbuf *err)
1413 struct bch_sb_field_clean *clean = field_to_type(f, clean);
1415 if (vstruct_bytes(&clean->field) < sizeof(*clean)) {
1416 prt_printf(err, "wrong size (got %zu should be %zu)",
1417 vstruct_bytes(&clean->field), sizeof(*clean));
1418 return -BCH_ERR_invalid_sb_clean;
1424 static void bch2_sb_clean_to_text(struct printbuf *out, struct bch_sb *sb,
1425 struct bch_sb_field *f)
1427 struct bch_sb_field_clean *clean = field_to_type(f, clean);
1428 struct jset_entry *entry;
1430 prt_printf(out, "flags: %x", le32_to_cpu(clean->flags));
1432 prt_printf(out, "journal_seq: %llu", le64_to_cpu(clean->journal_seq));
1435 for (entry = clean->start;
1436 entry != vstruct_end(&clean->field);
1437 entry = vstruct_next(entry)) {
1438 if (entry->type == BCH_JSET_ENTRY_btree_keys &&
1442 bch2_journal_entry_to_text(out, NULL, entry);
1447 static const struct bch_sb_field_ops bch_sb_field_ops_clean = {
1448 .validate = bch2_sb_clean_validate,
1449 .to_text = bch2_sb_clean_to_text,
1452 static const struct bch_sb_field_ops *bch2_sb_field_ops[] = {
1454 [BCH_SB_FIELD_##f] = &bch_sb_field_ops_##f,
1459 static const struct bch_sb_field_ops bch2_sb_field_null_ops = {
1463 static const struct bch_sb_field_ops *bch2_sb_field_type_ops(unsigned type)
1465 return likely(type < ARRAY_SIZE(bch2_sb_field_ops))
1466 ? bch2_sb_field_ops[type]
1467 : &bch2_sb_field_null_ops;
1470 static int bch2_sb_field_validate(struct bch_sb *sb, struct bch_sb_field *f,
1471 struct printbuf *err)
1473 unsigned type = le32_to_cpu(f->type);
1474 struct printbuf field_err = PRINTBUF;
1475 const struct bch_sb_field_ops *ops = bch2_sb_field_type_ops(type);
1478 ret = ops->validate ? ops->validate(sb, f, &field_err) : 0;
1480 prt_printf(err, "Invalid superblock section %s: %s",
1481 bch2_sb_fields[type], field_err.buf);
1483 bch2_sb_field_to_text(err, sb, f);
1486 printbuf_exit(&field_err);
1490 void bch2_sb_field_to_text(struct printbuf *out, struct bch_sb *sb,
1491 struct bch_sb_field *f)
1493 unsigned type = le32_to_cpu(f->type);
1494 const struct bch_sb_field_ops *ops = bch2_sb_field_type_ops(type);
1496 if (!out->nr_tabstops)
1497 printbuf_tabstop_push(out, 32);
1499 if (type < BCH_SB_FIELD_NR)
1500 prt_printf(out, "%s", bch2_sb_fields[type]);
1502 prt_printf(out, "(unknown field %u)", type);
1504 prt_printf(out, " (size %zu):", vstruct_bytes(f));
1508 printbuf_indent_add(out, 2);
1509 ops->to_text(out, sb, f);
1510 printbuf_indent_sub(out, 2);
1514 void bch2_sb_layout_to_text(struct printbuf *out, struct bch_sb_layout *l)
1518 prt_printf(out, "Type: %u", l->layout_type);
1521 prt_str(out, "Superblock max size: ");
1522 prt_units_u64(out, 512 << l->sb_max_size_bits);
1525 prt_printf(out, "Nr superblocks: %u", l->nr_superblocks);
1528 prt_str(out, "Offsets: ");
1529 for (i = 0; i < l->nr_superblocks; i++) {
1532 prt_printf(out, "%llu", le64_to_cpu(l->sb_offset[i]));
1537 void bch2_sb_to_text(struct printbuf *out, struct bch_sb *sb,
1538 bool print_layout, unsigned fields)
1540 struct bch_sb_field_members *mi;
1541 struct bch_sb_field *f;
1542 u64 fields_have = 0;
1543 unsigned nr_devices = 0;
1545 if (!out->nr_tabstops)
1546 printbuf_tabstop_push(out, 44);
1548 mi = bch2_sb_get_members(sb);
1550 struct bch_member *m;
1552 for (m = mi->members;
1553 m < mi->members + sb->nr_devices;
1555 nr_devices += bch2_member_exists(m);
1558 prt_printf(out, "External UUID:");
1560 pr_uuid(out, sb->user_uuid.b);
1563 prt_printf(out, "Internal UUID:");
1565 pr_uuid(out, sb->uuid.b);
1568 prt_str(out, "Device index:");
1570 prt_printf(out, "%u", sb->dev_idx);
1573 prt_str(out, "Label:");
1575 prt_printf(out, "%.*s", (int) sizeof(sb->label), sb->label);
1578 prt_str(out, "Version:");
1580 bch2_version_to_text(out, le16_to_cpu(sb->version));
1583 prt_str(out, "Version upgrade complete:");
1585 bch2_version_to_text(out, BCH_SB_VERSION_UPGRADE_COMPLETE(sb));
1588 prt_printf(out, "Oldest version on disk:");
1590 bch2_version_to_text(out, le16_to_cpu(sb->version_min));
1593 prt_printf(out, "Created:");
1595 if (sb->time_base_lo)
1596 pr_time(out, div_u64(le64_to_cpu(sb->time_base_lo), NSEC_PER_SEC));
1598 prt_printf(out, "(not set)");
1601 prt_printf(out, "Sequence number:");
1603 prt_printf(out, "%llu", le64_to_cpu(sb->seq));
1606 prt_printf(out, "Superblock size:");
1608 prt_printf(out, "%zu", vstruct_bytes(sb));
1611 prt_printf(out, "Clean:");
1613 prt_printf(out, "%llu", BCH_SB_CLEAN(sb));
1616 prt_printf(out, "Devices:");
1618 prt_printf(out, "%u", nr_devices);
1621 prt_printf(out, "Sections:");
1622 vstruct_for_each(sb, f)
1623 fields_have |= 1 << le32_to_cpu(f->type);
1625 prt_bitflags(out, bch2_sb_fields, fields_have);
1628 prt_printf(out, "Features:");
1630 prt_bitflags(out, bch2_sb_features, le64_to_cpu(sb->features[0]));
1633 prt_printf(out, "Compat features:");
1635 prt_bitflags(out, bch2_sb_compat, le64_to_cpu(sb->compat[0]));
1639 prt_printf(out, "Options:");
1641 printbuf_indent_add(out, 2);
1645 for (id = 0; id < bch2_opts_nr; id++) {
1646 const struct bch_option *opt = bch2_opt_table + id;
1648 if (opt->get_sb != BCH2_NO_SB_OPT) {
1649 u64 v = bch2_opt_from_sb(sb, id);
1651 prt_printf(out, "%s:", opt->attr.name);
1653 bch2_opt_to_text(out, NULL, sb, opt, v,
1654 OPT_HUMAN_READABLE|OPT_SHOW_FULL_LIST);
1660 printbuf_indent_sub(out, 2);
1664 prt_printf(out, "layout:");
1666 printbuf_indent_add(out, 2);
1667 bch2_sb_layout_to_text(out, &sb->layout);
1668 printbuf_indent_sub(out, 2);
1671 vstruct_for_each(sb, f)
1672 if (fields & (1 << le32_to_cpu(f->type))) {
1674 bch2_sb_field_to_text(out, sb, f);